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# This patches ActiveRecord so indexes for binary columns created using the
# MySQL adapter apply a length of 20. Otherwise MySQL can't create an index on
# binary columns.
if defined?(ActiveRecord::ConnectionAdapters::Mysql2Adapter)
module ActiveRecord
module ConnectionAdapters
class Mysql2Adapter < AbstractMysqlAdapter
alias_method :__gitlab_add_index2, :add_index
def add_index(table_name, column_names, options = {})
Array(column_names).each do |column_name|
column = ActiveRecord::Base.connection.columns(table_name).find { |c| c.name == column_name }
if column&.type == :binary
options[:length] = 20
end
end
__gitlab_add_index2(table_name, column_names, options)
end
end
end
end
end
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